ref·or·ma·tion 
(rĕf′ər-māshən)
(rĕf′ər-māshən)n.
1. The act of reforming or the state of being reformed.
2. Reformation A 16th-century movement in Western Europe that aimed at reforming some doctrines and practices of the Roman Catholic Church and resulted in the establishment of the Protestant churches.
ref′or·mation·al adj.